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Finding the Fourth Proportional to 316,644.72, 474,968.04 and 76,757.68

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Solution

The fourth proportional to 316,644.72, 474,968.04 and 76,757.68 is: 115,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,644.72 : 474,968.04 = 76,757.68 : x
  2. Step 2: Convert to fraction form
    316,644.72/474,968.04 = 76,757.68/x
  3. Step 3: Cross multiply
    316,644.72x = 474,968.04 × 76,757.68
  4. Step 4: Simplify right side
    316,644.72x = 36,457,444,440.76
  5. Step 5: Solve for x
    x = 36,457,444,440.76/316,644.72
  6. Step 6: Final answer
    x = 115,136.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.